Since i have a new graphic card ( Zotac GTX 1080 AMP! extreme ), i have the problem, that the LCD of the CDU stay's black, when the operation system ( Windows 7 64 Bit Ultimate Edition) is booting. The card has 1 HDMI Port, 1 DVI-DL Port and 3 DisplayPort 1.4.

The VGA Port of the LCD CDU is connected via an active adapter from Club 3D

When Windows has bootet, i can see the screen when i want to adjust the resolution. I have then set the resolution of the LCD of the CDU to 800 x 600 @ 60 hz, because the adapter works at this resulution.

Now, when i use the test programm of the CDU controller software i can turn it on and off. When i turne it on, i can see the windows logo and i can move an icon of an application to it and back.

Now my question is, is it normal, that i have to turn the LCD of the CDU first on or should it be already on, when Windows is booting.
I remember, that i had this problem not with my old graphic card, but the old one had a DVI-I port, where i was able to use a simple VGA/ DVI -I adapter

I Use the PMDG 737 and i have also the PMDG 737 Module for the FDS CDU installed. When i start FSX or P3D and i have loaded the PMDG 737 i always start then the FDS CDU Software. The LCD stay's always black until i configure the CDU 1 with the test Program and enable there the LCD of the CDU. Then i switch in the FDS CDU Controller the module and select from the dropdown list the PMDG 737 and assign the CDU for the captains layout. When i save the settings then and quit P3D/ FSX and the FDS Controller software and restart again then the FDS CDU is configured with the PMDG 737 module. But then the LCD stay's black until the moment when i revonfigured the module for test purpose to turn on again the LCD.

This is always the procedure when i have restarted the sim and the Controller software. Normal ?

Hello,
This is the problem that I am also having.
I start my FDS-PMDGControler software and during the "Initiation" and "Finalization" the CDU screen will light up perfectly, then turn back off and I cannot get it to come back on, even if the aircraft is powered up.
Was there a solution found for this thread or some help for this problem?

● The <FSXROOT>\PMDG\PMDG 737 NGX\737NGX_Options.ini and <FSXROOT>\PMDG\PMDG 777X\777X_Options.ini is automatically modified, adding to the bottom of the file : [SDK] EnableDataBroadcast=1

If you have any trouble getting the hardware to work with the PMDG aircraft please check this entry has been correctly added to the file. And if it is missing, should be manually added. It is required to allow the aircraft to output data to third party modules._________________Steve Cos
Tech Support
Flightdeck Solutions (FDS)

● The <FSXROOT>\PMDG\PMDG 737 NGX\737NGX_Options.ini and <FSXROOT>\PMDG\PMDG 777X\777X_Options.ini is automatically modified, adding to the bottom of the file : [SDK] EnableDataBroadcast=1

If you have any trouble getting the hardware to work with the PMDG aircraft please check this entry has been correctly added to the file. And if it is missing, should be manually added. It is required to allow the aircraft to output data to third party modules.

That worked! Thank you.
Believe it or not, I tried this before I posted here.
I copy/pasted the [SDK] EnableDataBroadcast=1 into the last line of the 737NGX_Options.ini file using Notepad, then saved it.
When I started the aircraft, nothing worked on the CDU, not even the buttons, so I went back and removed the line.
I tried it again after reading your post and now everything is working perfectly.
The only thing that I can think of is that I may have copied an extra space with the text, that messed up the whole thing when I pasted and saved it.
Thank you for your support and Merry Christmas.